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DOE Co-Optima report identifies top ten bio-blendstocks for efficiency in boosted SI engines

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The blendstocks all have the potential to reduce life-cycle greenhouse gas emissions by at least 60 percent. All the top-performing blendstocks showed potential to be produced at a competitive cost. United States: N. However, the team identified a number of outstanding challenges for the most promising blendstocks.

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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

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However, since the cost of the hydrous ethanol is significantly lower, hydrous ethanol will provide a lower cost per mile travelled, assuming the processing cost savings is passed on to the consumer. Use of Hydrous Ethanol in the United States. Until fairly recently, these US motor vehicles were non-FFVs.